McClintock is a surname of Scottish origin, deriving from an anglicization of a Gaelic name variously recorded as M`Ilandick, M`Illandag, M`Illandick, M`Lentick, McGellentak, Macilluntud, McClintoun, Mac Illiuntaig from the 14th century onward. The surname McClinton (MacClinton) is an anglicization of the same Gaelic name. Notable people with ... Found on http://en.wikipedia.org/wiki/McClintock